Island



UNITED STATS ELKANAH INGALLS, OF PROVIDENCE, ISLAND.

STEAM-Bourin Ann Erlangen..

Specification of Letters Patent 47,554, dated lyliay 3Q, 1,846,

To all 'whom it may @071.06m

ing; and I do hereby declare that the nature of the same andthe manner in which theyV operate are fully set forth and represented in the following specifications, accompanyl ing drawings, letters, figures, and references thereof.

Of said drawings, Figure l represents aj front elevation of a steam boiler having. my improvement applied thereto, Fig. 2 is a side yelevation of it, Fig. 3 is a longitudinal,

central and Vertical section of it, and Fig. 4 is a vertical and transverse section of it,

ytakken centrally through the part or apparatus, by which a regular flow of water into the steam generator is kept up, as will bev and at its upper end is jointed or suspended hereinafter described.

The nature of lmy invention consists first,

in a peculiar .apparatus to be applied to the air induction opening of the fireplace and to the valve or damper of the eduction flue or smoke pipe, for the regulation of the combustion of fuel, ,according to any required pressure of steam, and under the circumstances of the continued admission of cold or warm wate-r into the boiler. Second, in

an apparatus applied to the boiler in connecrIn the drawings, A denotes a cylindricall Yboiler having a fireplace B disposed within it, and so as to be entirely surrounded by water. The said fire .place has an o ening C, at the front end of the boiler, vfor t e admission of fuel, the said opening having a door D applied to it, by which it .may be entirely closed when necessary, or opened only whenever it may be desirable to increase the supply of fuel.

E is theeXit or smoke pipe, and F an induction opening made below the fire door, and so as to allow air to pass into the ash hole Gr, beneath the fire grate H. The said induction opening has a sliding door or valve I, applied to it, so as to readily move or slide up or down in a vertical plane. The said door or valve is suspended by a rod K and bail L tothe front end of a long lever M, placed over the boiler and `Vturning upon u 'a' fulorum in the top 0f a lstandard N, as

seen :in the drawings.

VNear the'standard N and under vrthe lever M, Vand communicating .with the interior of .the ,boiler is a cylinder or barrel, as seen at O, having a piston S moving within it whose stem P rests ,in contact with lthe under side of the' longest arm of the lever M. lNear the ,opposite end and .upon .the 4top of ,the'boiler and directly under ,thel lever, lanother and similar cylinder orbarrel and piston are dis.-

posed, as `seen at Q, .and T, the piston rod being seen at V, and between the `said two cylinders is a lframe R, made vto support a series of weights gv, o, arrangedV the one over the other, as seen in Fig. 4f. The said weights are sustained upon ,shoulders or cifsets'made-inthe frame,as seen at 6,6, &c., in Fig. 4, and each weight has a hole bored .through center tov receive and permit freely to pass through it a verticalE rod f, which vhas a head g, fixed .upon its lower end,

`to the lever MQ V represents a damper valve, ,placed in the eduction flue, .and having applied to its horizontal shaft .one or `more bent -levers -W, shaped andl havinga weight X applied to it as seen ,in Fig,` 2. The outer end of the yhorizontal arm ofthe said bent lever iscon nected .to .the leXtreme end of the long farm of the lever M by ta yrod Y jointed to both, :the damper being so arranged upon its shaft that when k:the end .of thelever M, 'adj acent to it, is raised, itshall soturnthedamperas to decrease theopening -for the smoke to pass around it and Vby it.

When .the boiler Ais put in operation, and

the steam attains a degree ,of tension sufficient Vto elevate the rpiston S, the rod P thereof will bear against the lever M, and as the steam increases will raise the long arm of ,the said leverand depress the other one, and the door or valve I, and thereby narrow Ethe opening for the admission of air into the ash hole and to the fuel incombustion. And v tion with the other cylinder and piston, in order to prevent accident in case the latter should fail to perform its oflice. The peculiar feature of novelty in the above described mechanism is the application of the regulating apparatus to the induction and eduction passages at one and the same time, in order that, Vwhen the induction opening is contracted, the eduction or smoke passage may be also contracted in a corresponding and proper manner. Were one of said passages contracted and the other left open, the external atmospheric air will gain access to the fuel in combustion through the opening not contracted; and, by so doing, will prevent the perfect action of the regulating apparatus, so far as the combustion of fuel is concerned. By thus contracting both the induction and eduction passages, by which air is supplied to the fire, and the smoke` allowed to escape from it, a greater saving of fuel is effected than when but one is operated on by the piston cylinder and lever, on the top of the boiler, as above described.

Then the steam attains the maximum pressure it will operate, through the piston s, and lever M, upon the valves of the induction and eduction passages in such manner as to regulate the supply of air to the furnace and escape of smoke therefrom, and perform the same in a much more effectual manner than when applied to either one of them alone. A

1f desired, the draft may be made to enter the fire arch or furnace through the top of the boiler, and after passing through the fire, may be made to pass out of the boiler at or near its bottom part. If the boiler is set in brickwork, the draft may be made to pass on the outside of the boiler as high as the brickwork extends, before it enters the chimney, and, if coal is used in the boiler, it may be burned on the bottom of the replace, and not in grates, as is generally practised, this being a very good method of burning anthracite coal. In fact, the draft may be admitted to the fireplace, throughv the top of the boiler, and let out at any convenient part of it that will answer the best purpose, or it may be admitted at or near the bottom part of it, as seen in the drawings.

The next portion of my invention, to be used in connection with the above, is as follows: h, represents a close cistern applied to the side of the boilers, and having a vertical partition z', placed within and eX- tending entirely across it, in the position as seen in the drawings, and thereby dividing it into two parts la, Z. The part Z communicates freely with the interior of the boiler, there being a hole or passage m cut through the boiler to allow of the same. The part 7c has a small cistern n, joined to it, in the situation with regardto it, as seen in Fig. 4. This second "cistern is open at top, and is to be filled and supplied with water by a force Vpump or any other proper means. An opening or passage 0, is made near the bottom of the cistern n, and so as to cause the two cisterns fn, and L, to communicate with each other, when said opening is not closed. Similar openings p, g, are made through the partition z', the one near the top, and the other near the bottom part of it. Each of said openings has a swinging or pendulous valve applied to` it, as seen in Fig. 4, and in Figs. 5 and 6, Fig. 5 being a cross section of the cistern 7:., showing its end to which the valve 7', which closes the opening 0, is applied. Fig. 6 is a cross section of said cistern taken between the partition i and boiler, and representing the valves s and applied to the openings 29 and g respectively. Each of said valves has an arm projecting from it, in a horizontal direction, as seen at u, u and w. A horizontal shaft passes through the central the arms o and fw, as seen in Fig. 6. The

aforesaid arms or cams should be so dis posed upon the shaft m that when one of the two termed y, z, is in action upon the arm u I,

of the valve r, and is pressing it sidewise, in order to open the passage 0, to allow water from the cistern n to rush through said passage and into the cistern h, the others shall produce no action upon the arms of ther other two, but allow them and their valves to be stationary, and thereby to close the passages to which said valves belong. The valves r, s, and t are pendulous valves, that is to say, they swing back and forth in lateral directions upon pins c', c, c', and fall into vertical positions, either by their own respective weights, or by weights applied to them, as in the case of the valve t which has a weight d hung to it below its pin c, the valve in this case being above the pin, as seen in Fig. 6.`

The cams or arms, before mentioned, as applied to the several valves and the horizontal shaft, should be so disposed that when the cams y, a are not in operation upon the valve r, the other arms or cams a, b', should be operating upon and moving t-he valves s and t, so as to open the passages to which they are applied, and thereby admit steam from the boiler to pass through the upper opening into the cistern L, and water from said cistern to flow into the boiler through the lower of said openings. When said openings are closed by their valves all communication is cut off between the cistern and boiler. At this time It also has two other arms or y l. The combination of the regulating ap-A p'aratus (or pistons, cylinders and Weighted levers, &c.,) placed on the top of the boiler, with induction and eduction valves IV applies to the induction and eduction passages of the chamber of combustion respectively and acting in conjunction as above set forth.

2. Also, the combination of the cisterns n and h, their valves, valve openings and turning shaft, and its cams, as applied to and combined with the boiler, and for the purpose of supplying it With Water, as above specified.

In testimony whereof, I have hereto set my signature, this thirteenth day of February A. D. 1846.

ELKANAH INGALLS.

Witnesses:

R. H. EDDY, GEO. H. BAILEY. 

